Investigation of size distribution of silver nanoparticles

Khordad, R.; Vakili, Mohamad; Bijanzadeh, A. R.

doi:10.1016/j.spmi.2011.11.007

Cited by 7 publications

(2 citation statements)

References 30 publications

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“…To check the applicability of Equation 1 for explaining the experimental UV/VIS spectra of silver dispersion, we recently produced the silver nanoparticles by spark method in deionized water and n-propanol and obtained the nanoparticles with an average diameter of 4 nm. The results for the silver nanoparticles in deionized water have been reported in the work of Khordad et al (2012). Figure 5 shows the absorbance of silver nanoparticles as a function of wavelength.…”

Section: Resultsmentioning

confidence: 70%

A study of the surface plasmon absorption band for nanoparticles

Bijanzadeh¹,

Vakili²,

Khordad³

2012

Int. J. Phys. Sci.

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In this work, we have performed the theoretical calculations of the absorbance of spherical silver nanoparticles dispersed in deionized water and in n-propanol, computed from a summation of the Mie series for different particle radius in the range from 1 to 17 nm. In both solvents, the maximum absorbance increases and the bandwidth at half-maximum absorption and number of particles decrease. Maximum absorbance of silver nanoparticles is higher in n-propanol than in deionized water. These results are due to high refractive index of n-propanol.

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Section: Resultsmentioning

confidence: 70%

A study of the surface plasmon absorption band for nanoparticles

Bijanzadeh¹,

Vakili²,

Khordad³

2012

Int. J. Phys. Sci.

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“…The solution was transparent with a yellow‐brownish color. Silver nanoparticles were characterized by UV–visible spectroscopy technique . The prepared colloidal nanosilver solution exhibited an intensive plasmon absorption band at 440 nm which proved the presence of silver nanoparticles, size 1–6 nm …”

Section: Resultsmentioning

confidence: 99%

Modification of regenerated cellulose membrane by impregnation of silver nanocrystal clusters

Vakili

Gholami

Mosallaei

et al. 2019

J of Applied Polymer Sci

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Regenerated cellulose forms a very important class of basic material with diverse applications because of its hydrophilicity and insolubility in water. Thus, one of the applications of regenerated cellulose is used to fabricate membranes. However, short operational lifetime is one of the disadvantages of the regenerated cellulose. In this research, surface modification of the cellophane membrane was carried out by silver nanoclusters. Silver colloids were formed in situ by chemical and photochemical reduction, and then, silver particles were deposited uniformly onto the surface of the cellophane membrane. The maximum amount of silver deposition was found to be 2.55% by weight in this modification. The modified and unmodified membranes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray analysis to indicate silver nanocrystalline cluster particles on the modified membrane. SEM images indicate well-dispersed silver particles with an average size of 0.65 μm on the membrane. XRD patterns showed that the size of the silver crystals was 3.9 nm. The surface properties of modified and unmodified membranes were studied by the contact angle. Water absorption, oxidative resistance, salt permeability, and thermal stability were investigated. This study revealed that the modified membrane is more resistant against the oxidative cleavage than the unmodified one moreover, the salt permeability increased after the treatment.

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